Well I expect Nolan to come home with a good explanation for why no one recongnises supes.lets be honest the comic book reasons fall flat.My theory is that is that it turns out the Alien nature of the Superman suit causes to be so mesmerising to humans that they cant recongnise the face behind the suit.Simple sweet

I liked how they did this:

Baggy clothes, shabby hair, glasses, dirties himself up a bit. It's not like it'd be that hard to tell who it was, but going from godlike to looking like a messy harry potter is fine with me.